split up data manager. It was getting too big and messy
add all the APIv2 team endpoints to DataManager
Changed my mind. I want the mini-datamangers to be inner classes.
team views updated to support new individual team API endpoints
only show years for team dropdown when the team has competed. Fix #119
Add better null checking for event venues (thanks tests!)
Merge pull request #140 from the-blue-alliance/update-team-datafeed

Update Team Datafeed